LINK Systems System 2500 PLS - Manual (Page 37)

System 2500 Operating & Installation Manual - Revision 07 2-29
DIE-PROT: ON | Press YES to turn off
LOCK INPUT: UNUSED | USE LOCK INPUT
Figure 5
Die-Protection On/Off Screen
By choosing VIEW CHANGE from the DP INPUT MENU, the operator can view the crankshaft
angle at which a particular die protection input changes. For example, if a part detector is being
used that causes a die protection input to change from open (ungrounded) to closed (grounded)
when the part passes, then the crankshaft angle where the part passes can be displayed using the
VIEW CHANGE option. This would be very useful if the operator were trying to adjust the
timing window during which the part must exit the die.
Input #25 is the first to be displayed when VIEW CHANGE is chosen. Other inputs may be
viewed by pressing the up or down arrow keys. When the desired input is on display, the YES
key should be pressed in order to reset the input capture function. Once the YES key has been
pressed, for one stroke beginning at 170 degrees the input will be monitored for any change. The
first time that the input closes (is connected to machine ground) will be displayed on the left side
of the screen, and the last time that the input opens will be displayed on the right side of the
screen. The first closing and last opening of the input are captured in this way in order to
properly see an irregularly shaped part or a part with holes. The operator should remember that
once the YES key has been pressed, no monitoring will take place (the display will not change)
until 170 degrees is reached. After this point the input will continue to be monitored until 170
degrees is reached again (one full stroke). Therefore if the press stops on top and the part then
exits the part detector, the 'Last Opened' angle displayed will be the angle at which the press
stopped.
2.8.2 DIE-PRO ON/OFF
Selection of this item on the Die-Prot menu will display the Die-Protection On/Off screen as
shown in Figure 5. This screen informs the operator of the status of the die protection system,
i.e. whether it is ON (monitoring for faults) or OFF (bypassed.) The operator can turn die
protection off as described in Section 2.8.2.1. In addition, this screen gives the operator access to
the Die Protection Lock function as described in Section 2.8.2.2 below.
2.8.2.1 Die Protection On/Off Status
Referring to Figure 5, the top line of the Die-Protection On/Off screen displays information
regarding the status of die protection monitoring. The label ‘DIE-PROT:’ is followed by an
indicated status of either ON or OFF. If the word ON is displayed, the system is monitoring the
die protection inputs that have been
programmed and will issue a stop signal if
improper operation is detected. If the word
OFF is displayed, the die protection
monitoring has been bypassed by the operator
and the system will not issue a stop signal in
connection with the die protection inputs.
When die protection is OFF, the ‘D/P